It says "device not supported" when I plug it in. Huh? Reset and same thing.

I saw someone the other day complaining that the hdmi adapter output was still letterboxed (as obviously it still should be..) so apparently its working for some people.

Anyone else tried it yet? Or have one they can try?

I saw this, too, but the output still works on my new iPad with last year's adapter. I got the message about "This is an unsupported accessory" but when you hit OK, the video is still output through the adapter.

I got my adapter as a birthday gift last summer (appr. August 2011). It works great with my iPhone 4 and worked great with my iPad 2. Now I get the accessory not compatible message with my new iPad.

I have not tried just leaving it plugged in for a little while to see if it kicks on. Maybe I'll try that tomorrow. We are cord cutters, so we sometimes rent movies on iTunes and hook the iPad up to the TV, so it was really disappointing tonight to find out that it didn't work. Ended up watching our rental straight off the iPad propped up on the coffee table!! (No joke--even though it was on a small screen, the picture quality still blew me away on the new iPad.)

Like others have mentioned it should come on after a few seconds despite receiving that message.

I was fortunate that I could exchange my adapter since I bought it only a few days before the iPad 3 release. The new one does not display the warning message. I've yet to test it to see if the output is any different.

I was unable to get the HDMI adapter to work with the new iPad no matter what order I did things in. My wife and I were in Vegas this week and I saw that there was an Apple store at the Forum Shops in Caesar's Palace. I took my adapter in to them and they switched it out no questions asked. I tested the new one out when we got home and it worked flawlessly without even giving me the incompatibility message.

PS: I got the adapter as a birthday gift last summer--they took my word for it without a receipt or even testing out the adapter.

I was unable to get the HDMI adapter to work with the new iPad no matter what order I did things in. My wife and I were in Vegas this week and I saw that there was an Apple store at the Forum Shops in Caesar's Palace. I took my adapter in to them and they switched it out no questions asked. I tested the new one out when we got home and it worked flawlessly without even giving me the incompatibility message.

PS: I got the adapter as a birthday gift last summer--they took my word for it without a receipt or even testing out the adapter.

Their in-store customer service is the best I've ever encountered for a retail storefront.